现浇薄壁管桩技术在桥头地基加固中的应用

Application of Cast-in-place Thin Wall Pipe Pile in the Foundation Reinforcement at Bridgehead

随着桥梁工程建设数量的逐年增加,如何减小桥头两侧出现的地基沉降,已成为当前高速公路设计和建设者的首要难题。文章根据现浇薄壁管桩的成桩原理,详细介绍了某桥头两侧现浇薄壁管桩技术的施工过程。结果表明现浇薄壁管桩复合地基功效明显,工后桥头两侧地基沉降小,沉降速率快,能快速使桥头两侧地基趋于稳定,可有效降低桥头两侧地基沉降。

Abstract： With the increase of the number of bridge engineering, how to reduce the settlement of foundation on both sides of the bridge has become the most important problem of the current highway design and construction. According to the principle of pile forming the cast-in-place thin wall pipe pile, this paper introduces the construction process of cast-in-place thin wall pipe pile on both sides of a bridge in detail. The results show that the effectiveness of the composite foundation with cast-in-place thin wall pipe pile is obvious, the foundation settlement on both sides of the bridge is small after the construction, the settlement rate is fast, it can quickly make the foundation on both sides of the bridge Stabilized and can effectively reduce the foundation settlement on both sides of the bridge.